feat: 新增文档源和技能管理相关功能

1. 新增文档源管理模块（documentSource）
   - 控制器：documentSourceController.py
   - DAO层：documentSourceDao.py
   - 模型：documentSourceModel.py
   - 服务层：documentSourceService.py

2. 新增技能管理模块（skill）
   - 控制器：skillController.py
   - DAO层：skillDao.py
   - 模型：skillModel.py
   - 服务层：skillService.py

3. 新增AI服务（aiService.py）

4. 新增配置文件
   - AI配置：config/ai_config.py
   - 技能配置：config/skills/test-case-generator/

5. 新增SQL脚本
   - 文档权限：add_document_permissions.sql
   - 模块状态字段：add_module_status_field.sql
   - 文档源表：create_document_source_table.sql
   - 技能规则：skills_rules_pgsql.sql

config/skills/skill-creator/scripts/utils.py

@@ -0,0 +1,47 @@
+"""Shared utilities for skill-creator scripts."""
+
+from pathlib import Path
+
+
+
+def parse_skill_md(skill_path: Path) -> tuple[str, str, str]:
+    """Parse a SKILL.md file, returning (name, description, full_content)."""
+    content = (skill_path / "SKILL.md").read_text()
+    lines = content.split("\n")
+
+    if lines[0].strip() != "---":
+        raise ValueError("SKILL.md missing frontmatter (no opening ---)")
+
+    end_idx = None
+    for i, line in enumerate(lines[1:], start=1):
+        if line.strip() == "---":
+            end_idx = i
+            break
+
+    if end_idx is None:
+        raise ValueError("SKILL.md missing frontmatter (no closing ---)")
+
+    name = ""
+    description = ""
+    frontmatter_lines = lines[1:end_idx]
+    i = 0
+    while i < len(frontmatter_lines):
+        line = frontmatter_lines[i]
+        if line.startswith("name:"):
+            name = line[len("name:"):].strip().strip('"').strip("'")
+        elif line.startswith("description:"):
+            value = line[len("description:"):].strip()
+            # Handle YAML multiline indicators (>, |, >-, |-)
+            if value in (">", "|", ">-", "|-"):
+                continuation_lines: list[str] = []
+                i += 1
+                while i < len(frontmatter_lines) and (frontmatter_lines[i].startswith("  ") or frontmatter_lines[i].startswith("\t")):
+                    continuation_lines.append(frontmatter_lines[i].strip())
+                    i += 1
+                description = " ".join(continuation_lines)
+                continue
+            else:
+                description = value.strip('"').strip("'")
+        i += 1
+
+    return name, description, content